Cable size

ml1936 · 8 Sep 2008

10mm fed from 50A Breaker this would be too small cable, right?

Spark123 · 8 Sep 2008

Depends how it is installed.

ml1936 · 8 Sep 2008

behind plaster and under floorboards

ricicle · 8 Sep 2008

What is the proposed load and how long is the run?

sparkyspike · 8 Sep 2008

If it's t+e copper, then yes, too small. On a short run would be ok if in conduit, not in wall.

ml1936 · 8 Sep 2008

long run maybe 25-30M, 16mm required then?

Spark123 · 8 Sep 2008

Take a look at table 4D5

sparkyspike · 8 Sep 2008

Yes. Volt drop will be 4 or 5 volts, but within limits.

ban-all-sheds · 8 Sep 2008

ml1936 said:
10mm fed from 50A Breaker this would be too small cable, right?

ml1936 said:
Do you have to install extractor fans in bathrooms/shower rooms and WCs as part of a re-wire. Mains supplied Smoke alarms are required with battery back up arent they?

ml1936 said:
When ELCBs are used in domestic situations instead of a 100mA RCD, is this compliant, ie can circuits still be added or would an RCD need installing?

ml1936 said:
Please can some one explain how to use adiabatic equation to work out main earth
BS1361 Main Fuse 100A
PFFC 1300A
Meter Tails 10mm

ml1936 said:
A Fused Spur is required to supply a Hand WaterHeater which is situated in front of a sink. Where can the fused spur be installed? The flex is to go in the front of it. Can it be placed above sink with heater or above draining board? Or does it have to be 300mm away from these?

ml1936 said:
Is it still ok to upgrade CU is main bond is only 10mm and customer not willing to pay to upgrade to 16mm because of mess it'd cause?

ml1936 said:
Were do you stand legally if you install your cables 1st fix in the required zones, and then later before they are plastered a plumber moves them to accomodate there pipes and there are no longer in the zones, but you know nothing of this. Then they get plastered hiding everything. If someone drills through them and blames you for not having them in the right zones?

ml1936 said:
If supplying double oven and an electric hob would they need to be run from seperate circuits, is this the norm to run two seperate circuits for them?

Are you sure you're quite ready for this line of work?

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Cable size

sparkyspike

sparkyspike

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